That's pretty much it. Difficult part is removing the circlips. There are vaiations. The first bit doesn't need the vice and it is best to use a wooden or copper faced hammer.
From a guru on a previous message board:
UJ Removal – The JK patented method
The patented JK UJ removal method is the best thing since sliced bread:
Remove all circlips - if right handed hold the halfshaft in your left hand around the mid point, and hit the outside of the separate flange (copper hammer is best) so the downward pointing UJ cup is knocked out;
Turn the shaft through 180 degrees and again hit the outside edge of the flange to knock the other cup out (or at least they come out far enough to grab them in a vice).
After removing said flange this leaves two exposed sticky out bits of the UJ, these can be rested across vice jaws and the copper hammer can then be aimed at the yoke on the halfshaft so the upward pointing cup pops upwards, turn through 180 and a couple of taps with the hammer and the last cup pops up and the UJ is out.
With a bit of practice virtually any UJ can be removed in under a minute (once all the clips are out). If a clip breaks or is very tight it is far easier to get at it by pushing the cup in very slightly once the opposing cup has been taken out.
John Kipping 24/6/03
Old rusty UJs certainly need some whacking to get them out - if in doubt use a bigger hammer.
John Kipping 26/6/03
. . . and then you have to pick up all the roller bearings from everywhere.
C.